2025-73: Surveyed Depths – Harwich Deep Water Channel – Update 3
03 September 2025
Mariners are advised the latest hydrographic surveys showing depths in the Harwich Deep Water Channel which are published as follows:
Charts & Surveys – Harwich Haven Authority
The latest soundings are to be taken into account for passage planning and vessels should maintain a minimum of 10% under keel clearance (in relation to their draught), including when passing other vessels.
Contact Harwich VTS or Haven Pilots for further information.
This notice replaces local Notice to Mariners No. 44 of 2025 which is now withdrawn.